GM Service Manual Online
For 1990-2009 cars only
Connector 1: Powertrain Control Module (PCM) - C1
Connector 2: Powertrain Control Module (PCM) - C2

Powertrain Control Module (PCM) - C1


Object Number: 73173  Size: CH

Connector Part Information

  • OEM: 12191110
  • Service: 12167308
  • Description: 80-Way F Micro-Pack 100 Series Sealed (BU)

Terminal Part Information

  • Pins: 4, 8, 9, 37, 43, 49, 60, 76, 77
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Terminal/Tray: 12084913/5
  • Core/Insulation Crimp: W/W
  • Release Tool/Test Probe: 12122523/J-35616-6 (BN)

Powertrain Control Module (PCM) - C1

Pin

Wire Color

Circuit No.

Function

1

BK/WH

451

Ground

2

L-GN

1867

12-Volt Reference

3

--

--

Not Used

4

L-BU/BK

844

Fuel Injector 4 Control

5-6

--

--

Not Used

7

GY

2705

5-Volt Reference

8

GY

2701

5-Volt Reference

9

D-BU

496

KS Signal

10-11

--

--

Not Used

12

D-BU/WH

1869

CKP Sensor Signal

13-16

--

--

Not Used

17

D-BU

1225

Transmission Fluid Pressure Switch Signal B (A/T)

18

RD

1226

Transmission Fluid Pressure Switch Signal C (A/T)

19

PK

439

Ignition 1 Voltage

20

OG

440

Battery Positive Voltage

21

YE/BK

1868

Low Reference

22

--

--

Not Used

23

BK

470

Low Reference

24

BK/WH

451

Ground

25

TN

1671

HO2S Low Signal Bank 2 Sensor 2

26

TN

1667

HO2S Low Signal Bank 2 Sensor 1

27

BK/WH

451

Ground

28

TN/WH

1669

HO2S Low Signal Bank 1 Sensor 2

29

TN

1664

HO2S Low Signal Bank 1 Sensor 1

30-31

--

--

Not Used

32

BK/WH

771

Transmission Range Switch Signal A (A/T)

33

PU

420

TCC Brake Switch/Cruise Control Release Signal

34

WH

776

Transmission Range Switch Signal P (A/T)

35

GY

48

CPP Switch Signal (M/T)

36

BK

1744

Fuel Injector 1 Control

37

PK/BK

1746

Fuel Injector 3 Control

38

--

--

Not Used

39

YE/BK

625

Starter Enable Relay Control

40

BK/WH

451

Ground

41

--

--

Not Used

42

D-GN

335

Low Speed Cooling Fan Relay Control

43

BK/WH

845

Fuel Injector 5 Control

44

--

--

Not Used

45

GY

2700

5-Volt Reference

46

GY

474

5-Volt Reference

47

--

--

Not Used

48

GY

597

5-Volt Reference

49

GY

1716

KS Signal

50-52

--

--

Not Used

53

BK

720

Low Reference (A/T)

54

OG/BK

469

Low Reference

55-56

--

--

Not Used

57

OG

440

Battery Positive Voltage

58

D-GN

1049

Class 2 Serial Data

59

--

--

Not Used

60

BK

2752

Low Reference

61

PK/BK

632

Low Reference

62

--

--

Not Used

63

BK

2755

Low Reference

64

BK/WH

451

Ground

65

PU

1670

HO2S High Signal Bank 2 Sensor 2

66

PU

1666

HO2S High Signal Bank 2 Sensor 1

67

BK/WH

451

Ground

68

PU/WH

1668

HO2S High Signal Bank 1 Sensor 2

69

PU/WH

1665

HO2S High Signal Bank 1 Sensor 1

70-71

--

--

Not Used

72

YE

772

Transmission Range Switch Signal B (A/T)

73

BN/WH

633

CMP Sensor Signal

74

YE

410

ECT Sensor Signal

75

PK

1020

Ignition 0 Voltage

76

BK

1745

Fuel Injector 2 Control

77

YE/BK

846

Fuel Injector 6 Control

78

--

--

Not Used

79

WH

687

3-2 Shift Solenoid Valve Control (A/T)

80

BK

407

Low Reference

Powertrain Control Module (PCM) - C2


Object Number: 73173  Size: CH

Connector Part Information

  • OEM: 12191110
  • Service: 12167308
  • Description: 80-Way F Micro-Pack 100 Series Sealed (GN)

Terminal Part Information

  • Pins: 13, 24, 26, 59 , 72, 74 , 76, 77-79
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Terminal/Tray: 12084913/5
  • Core/Insulation Crimp: W/W
  • Release Tool/Test Probe: 12122523/J-35616-6 (BN)

Powertrain Control Module (PCM) - C2

Pin

Wire Color

Circuit No.

Function

1

BK/WH

451

Ground

2

BN

418

TCC PWM Solenoid Valve Control (A/T)

3-5

--

--

Not Used

6

RD/BK

1228

PC Solenoid Valve High Control (A/T)

7

--

--

Not Used

8

WH

1229

PC Solenoid Valve Low Control (A/T)

9

WH

465

Fuel Pump Relay Control

10

WH

121

Engine Speed Signal

11-12

--

--

Not Used

13

BK

396

Cruise Control Engaged Signal

14

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

15

PU

5428

Generator Regulator Control

16

GY/BK

1694

4WD Low Signal

17

--

--

Not Used

18

D-GN

1433

Clutch Start Switch Signal (M/T)

19

BK/WH

1695

Axle Switch Signal

20

BK

822

VSS Low Signal

21

PU/WH

821

VSS High Signal

22-23

--

--

Not Used

24

D-BU

417

TP Sensor Signal

25

TN

472

IAT Sensor Signal

26

WH

423

IC Timing Control

27-30

--

--

Not Used

31

YE

492

MAF Sensor Signal

32

L-GN

432

MAP Sensor Signal

33

D-BU

473

High Speed Cooling Fan Relay Control

34

WH

428

EVAP Canister Purge Solenoid Control

35-38

--

--

Not Used

39

RD

631

12-Volt Reference

40

BK/WH

451

Ground

41

--

--

Not Used

42

TN/BK

422

TCC Solenoid Valve Control (A/T)

43

WH

459

A/C Compressor Clutch Relay Control

44

--

--

Not Used

45

WH

1310

EVAP Canister Vent Solenoid Control

46

BN/WH

419

MIL Control

47

YE/BK

1223

2-3 Shift Solenoid Valve Control (A/T)

48

L-GN

1222

1-2 Shift Solenoid Valve Control (A/T)

49

YE/BK

1827

Vehicle Speed Signal

50

WH

817

Vehicle Speed Signal

51

YE/BK

1227

TFT Sensor Signal

52

BN

2391

HO2S Heater Low Control - Bank 1 Sensor 2

53

RD/WH

3223

HO2S Heater Low Control - Bank 2 Sensor 2

54

PU/WH

1589

Fuel Level Sensor Signal

55-56

--

--

Not Used

57

BK

552

Low Reference

58

TN/WH

332

Oil Pressure Sensor Signal

59

PU

806

Crank Voltage

60-61

--

--

Not Used

62

GY

773

Transmission Range Switch Signal C (A/T)

63

PK

1224

Transmission Fluid Pressure Switch Signal A (A/T)

64

D-GN

890

Fuel Tank Pressure Sensor Signal

65-71

--

--

Not Used

72

BK/WH

3113

HO2S Heater Low Control - Bank 1 Sensor 1

73

--

--

Not Used

74

L-GN

3212

HO2S Heater Low Control - Bank 2 Sensor 1

75

--

--

Not Used

76

WH

1749

IAC Coil B High Control

77

BK

444

IAC Coil B Low Control

78

BK

1748

IAC Coil A Low Control

79

WH

1747

IAC Coil A High Control

80

BK

2751

Low Reference